I finally got my 3.73 gears installed. I had AZ Diff do the work because the shop that was going to do the install flaked on me. I have not had a chance to really notice any improvement until I get them broken in. I will say that AZ Diff did a great job. I had heard good and bad things about the shop, but Bill was very helpful and did the work today even though it was a Saturday. Took it in at 9a and it was done by noon. He was very helpful and gave me a lot of information on how to properly break them in. I need to go back after about 3000 miles to have the gear oil changed. Overall I had a pretty good experience. Now I just need to rack up about 500 miles, before I can see what they can do.
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03-20-10, 05:43 PM #1Senior Member
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- Jan 2010
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- Peoria, Az
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Got my gears installed/AZ Diff review
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03-20-10, 07:15 PM #2Senior Member
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- Jan 2010
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Just got back from a lightly spirited drive and I can say there is a lot more pick up from the car then before. The car moves through 1st much faster and 5th gear does not seem so low. Another couple of days and I can really get into it to see what it does. Can't wait.
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03-21-10, 02:02 AM #3Senior Member
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- Jan 2007
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- Surprise, AZ
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- 1,197
what gears did you have in there originally? 3.73 are a nice gears choice! you know not too high rpms when your cruisin at like 75 but quick acceleration!
2010 GT500 - Modded out the Wazoo. Tuned by Shelby American Motorsports. Las Vegas, NV.
2003 Ford Lightning- Airaid intake, Bassani exhaust, Lakewood torsion bar, 2" drop shackels and a few more mods.
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03-21-10, 07:41 AM #4Senior Member
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- Peoria, Az
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Stock gears, 3.27 I think. Yeah I debated 4.10's, but I drive way too many highway miles for that plus I may put a SC on one day.
Originally Posted by 05mustangman
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03-21-10, 02:27 PM #5Senior Member
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- Feb 2009
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- Peoria, Arizona
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good choice i still like my 4.10's
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03-21-10, 02:41 PM #6Senior Member
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- Jan 2010
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Thanks. I just could not bring myself to getting the 4.10's. Although, riding in your car was a trip. I hope to get out and have some fun as soon as they are broken in a bit. Originally Posted by Jodaddy
good choice i still like my 4.10's
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04-21-10, 10:24 PM #7Member
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- Apr 2010
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- Arizona
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- 37
What brand of gears did you have installed? Do you notice any gear whine while cruising?
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04-22-10, 05:55 AM #8Senior Member
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- Jan 2010
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- Peoria, Az
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FRPP, PM sent. Originally Posted by 6-Speed
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04-22-10, 07:53 AM #9Senior Member
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- Dec 2009
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- LUKE AFB
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- 100
Glad you had a good experience. I went from Motive 3.73's to FRPP 3.73's along with some other work and all gear whine is gone. AZ Diff set me up good. I think my motive gears werent matched up correctly from the manufacture.
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04-23-10, 01:19 PM #10Senior Member
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- Sep 2007
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- Luke AFB
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I have never broken in gears. Well correction I have real quick heat cycle then time to have fun. I always used frpp gears never got any whine until 4.30 gears, but then again going that high your gonna get a little whine.
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